Bug 196124
Summary: | partitionable raid (/dev/md0p) support | ||
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Product: | [Fedora] Fedora | Reporter: | Avi Kivity <avi> |
Component: | anaconda | Assignee: | Anaconda Maintenance Team <anaconda-maint-list> |
Status: | CLOSED WONTFIX | QA Contact: | Mike McLean <mikem> |
Severity: | medium | Docs Contact: | |
Priority: | medium | ||
Version: | 5 | CC: | k.georgiou |
Target Milestone: | --- | ||
Target Release: | --- | ||
Hardware: | All | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | Bug Fix | |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2006-06-26 01:27:53 UTC | Type: | --- |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: |
Description
Avi Kivity
2006-06-21 09:19:20 UTC
If this is implemented, a new feature becomes easy to implement: RAID retrofit. Currently, if you install a system without RAID, then add a disk, it is impossible for the average user to mirror the two disks. If partitionable RAID support is added, we could default to setting up partitionable RAID even with a single disk. If, later, a disk is added, one command will add it to the RAID. LVM already gives you the ability to partition the RAID device... adding support for another way of doing things is just likely to a) make the UI even more confusing and b) make it more likely for things to fail in unexpected ways. LVM can parition a RAID device, but one cannot boot from LVM; this means you need at least two RAID devices _and_ the old msdos partitioning. It will make the UI a lot _less_ confusing if you hide the non-partitionable RAID behind some 'advanced' button and make partitionable RAID the default. I recently walked a Windows admin through the process of setting up RAID during installation. It is remarkable complex and non-intuitive. In addition, the probability of a non-guru recovering from a disk failure with non-partitionable RAID is very low in my opinion: you have to repartition the disk manually and rebuild at least two RAID devices. Please reconsider. Having a RAID per partition is very clunky compared to RAID per disk. Or at least add a UI for recovery. Alternatively, if one could boot from LVM we wouldn't need this, but mdp is here and LVM boot is not. |